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1-2 of 2 results by Jeremy St. Thomas


Title: PECARN Pediatric Cervical Spine Prediction Rule (2024)

Category: Pediatrics

Keywords: PECARN, cervical spine injury, blunt trauma, pediatric trauma, cervical imaging, CT reduction, decision rule (PubMed Search)

Posted: 10/2/2026 by Jeremy St. Thomas, MD (Updated: 11/6/2026)

One-liner 

A large prospective PECARN study developed and validated a highly sensitive clinical prediction rule to safely reduce unnecessary cervical spine imaging in children with blunt trauma.  

Background: Pediatric cervical spine injury (CSI) is rare (<1% of blunt trauma), but missing an injury has devastating consequences. Existing adult rules (NEXUS, Canadian C-Spine Rule) are not well validated in children. 

Methods: This multicenter prospective observational study enrolled over 22,000 children with blunt trauma across PECARN hospitals. Investigators identified clinical variables associated with CSI and derived a risk-stratification rule. 

Results: The rule demonstrated very high sensitivity (~94%) and an extremely high negative predictive value (>99.9%) for clinically significant CSI. High-risk factors (e.g., GCS 3–8, focal neurologic deficits) warrant CT, whereas intermediate-risk factors may be evaluated with plain radiographs. Children without identified risk factors generally do not require imaging. 

Limitations: Observational derivation/validation study rather than an interventional trial. Clinical judgment remains important in atypical presentations. 

Clinical Relevance: This is likely to become the pediatric equivalent of the PECARN head trauma rule and should reduce unnecessary CT imaging while maintaining patient safety.

Take-home Points 

  • First large, validated pediatric-specific CSI rule.  
  • Helps identify children who require CT versus radiographs versus no imaging.  
  • Expected to reduce radiation exposure.  
  • May become the new standard for pediatric cervical spine evaluation.

Show References

Leonard JC, et al. Lancet Child Adolesc Health. 2024.  

DOI: 10.1016/S2352-4642(24)00104-4.



Title: BUCKLED Trial (POCUS for Pediatric Distal Forearm Fractures)

Category: Pediatrics

Keywords: POCUS, ultrasound, distal forearm fracture, buckle fracture, pediatric orthopedics, imaging (PubMed Search)

Posted: 8/7/2026 by Jeremy St. Thomas, MD (Updated: 8/7/2026)

One-liner:

Point-of-care ultrasound was noninferior to radiographs for diagnosing distal forearm buckle fractures while improving patient experience.

Summary:

Background: Distal forearm buckle fractures are among the most common pediatric fractures and are often straightforward to diagnose. 

Methods: Multicenter randomized trial comparing ultrasound-first evaluation with conventional radiography (n=270). 

Results: Ultrasound accurately diagnosed buckle fractures with similar clinical outcomes. Families reported greater satisfaction, ED length of stay decreased, and radiation exposure was avoided. 

Limitations: Requires physician ultrasound training. Results apply primarily to uncomplicated distal forearm injuries. 

Clinical Relevance: Supports expanding POCUS use for selected pediatric orthopedic injuries and reducing unnecessary radiographs. 

Take-home Points:

POCUS is an effective first-line imaging modality, ideal for experienced ultrasound users.  

Shorter ED stays.  

Eliminates radiation.

Show Additional Information

Show References

Snelling PJ, Jones P, Bade D, Bindra R, Byrnes J, Davison M, George S, Moore M, Keijzers G, Ware RS; BUCKLED Trial Group. Ultrasonography or Radiography for Suspected Pediatric Distal Forearm Fractures. N Engl J Med. 2023 Jun 1;388(22):2049-2057. doi: 10.1056/NEJMoa2213883. PMID: 37256975.



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